Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a17974d9c7fe5ca…

MALICIOUS

PDF

51.7 KB Created: 2020-08-07 18:17:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 619edf7674956ab063d98bc2df56f189 SHA-1: c2488d713dbcd733a96a4274371b8aa55ad1001b SHA-256: 5a17974d9c7fe5cad0ff4299026629961e00d545590cdf6642682d8c3839f2d3
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=deux+arabesques+debussy+pdf'. Additionally, it features a large number of embedded links to other PDFs hosted on Shopify, suggesting a link farm for SEO poisoning or further distribution. The document body, though heavily corrupted, contains the malicious URL and references to other PDF files, reinforcing the redirection and link-farming attack patterns. No scripts were extracted from this sample.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.com/pify?keyword=deux+arabesques+debussy+pdf
    • http://files.britishcolumbiaschoolactsection177.ca/uploads/1/3/1/0/131071164/47c5a1fc2a.pdf
    • http://files.hayessweetsbakeshop.com/uploads/1/3/0/7/130740521/2911738.pdf
    • http://files.k9clubhouseymm.ca/uploads/1/3/1/4/131406391/b7e8d.pdf
    • https://cdn.shopify.com/s/files/1/0434/3998/0711/files/how_to_install_orespawn.pdf
    • https://cdn.shopify.com/s/files/1/0433/5131/0488/files/tokokaloj.pdf
    • https://cdn.shopify.com/s/files/1/0430/7822/1973/files/pepalenujinurokumuxijej.pdf
    • https://cdn.shopify.com/s/files/1/0427/9782/6207/files/bedobinarifixoj.pdf
    • https://cdn.shopify.com/s/files/1/0434/5122/0120/files/tobetofolaze.pdf
    • https://cdn.shopify.com/s/files/1/0428/5438/3782/files/46473707051.pdf
    • https://cdn.shopify.com/s/files/1/0428/5808/6559/files/kulagokamiluku.pdf
    • https://cdn.shopify.com/s/files/1/0436/9845/4682/files/govivun.pdf
    • https://cdn.shopify.com/s/files/1/0435/1646/1211/files/bigger_than_a_breadbox.pdf
    • https://cdn.shopify.com/s/files/1/0431/2560/4513/files/nilosivilobokov.pdf
    • https://cdn.shopify.com/s/files/1/0435/6279/5171/files/71141585508.pdf
    • https://cdn.shopify.com/s/files/1/0429/6926/8373/files/xozoxa.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/22537170944.pdf
    • https://cdn.shopify.com/s/files/1/0432/7260/1756/files/jurebosorojawoxakalajuno.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006026.bin
022c710fff1c5287954e8b9a186be7c2780c240f12fa2d090ca4178cde42a97d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6026 4976 bytes
font_01_sfnt_off0000711c.bin
f5b4336e0e51599fd7525639124d740b0d5b4627f75fe125f9bd2c68a67d7b3d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x711C 9164 bytes
font_02_sfnt_off00008adf.bin
06b8dde8cc008aed366370656120d791ddfc63afb72c679d52a2b9cee09983eb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8ADF 12076 bytes
font_03_sfnt_off0000b112.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB112 4324 bytes

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